ONCH pretzels aren't just pretzels, they are hearts with DNA (double helix) the most unbreakable bond! We all know the only way to profess love to your darling is by giving them your heart and your DNA. These pretzel charm necklaces are delicate and ready for everyday wear. ONCH pretzel charm measures 0.6" with necklace measuring 16" with 2" extension. Made with silver toned and gold toned metal.